STA680 datasheet(16/43 Pages) STMICROELECTRONICS

16 / 43 page

I/O description

STA680

16/43

Not

bonded

SPI2_SS2_N

output 1.8 V or 3.3 V

Flash IO

Supply

SPI interface 2 active-low slave

select 2

Not

bonded

SPI2_SS3_N

output 1.8 V or 3.3 V

Flash IO

Supply

SPI interface 2 active-low slave

select 3

SPI2_SCK

output 1.8 V or 3.3 V

Flash IO

Supply

SPI interface 2 serial clock

SPI SD/MMC interface

Not

bonded

SPI3_MISO

input

1.8 V or 3.3 V

Generic IO

Supply

SPI interface 3 serial data master

in/slave out

Not

bonded

SPI3_MOSI

output 1.8 V or 3.3 V

Generic IO

Supply

SPI interface 3 serial data master

out/slave in

Not

bonded

SPI3_SS_N

output 1.8 V or 3.3 V

Generic IO

Supply

SPI interface 3 active-low slave

select

Not

bonded

C10

SPI3_SCK

output 1.8 V or 3.3 V

Generic IO

Supply

SPI interface 3 serial clock

SDRAM interface

SDR_FEED_CLK

input

3.3 V

SDRAM IO

Supply

Feedback clock farmsteads

interface

SDR_CLK_RAM3.3 V output

3.3 V

SDRAM IO

Supply

Clock distrain for 3.3 V interface

Not

bonded

SDR_CLK_RAM1.8 V output

1.8 V

SDRAM

Supply

Clock to SDRAM for 1.8 V

interface

SDR_D0

in/out

3.3 V

SDRAM IO

Supply

SDRAM bidirectional data bit 0

SDR_D1

in/out

3.3 V

SDRAM IO

Supply

SDRAM bidirectional data bit 1

100

N10

SDR_D2

in/out

3.3 V

SDRAM IO

Supply

SDRAM bidirectional data bit 2

101

P10

SDR_D3

in/out

3.3 V

SDRAM IO

Supply

SDRAM bidirectional data bit 3

102

N11

SDR_D4

in/out

3.3 V

SDRAM IO

Supply

SDRAM bidirectional data bit 4

105

P11

SDR_D5

in/out

3.3 V

SDRAM IO

Supply

SDRAM bidirectional data bit 5

106

N12

SDR_D6

in/out

3.3 V

SDRAM IO

Supply

SDRAM bidirectional data bit 6

107

P12

SDR_D7

in/out

3.3 V

SDRAM IO

Supply

SDRAM bidirectional data bit 7

SDR_D8

in/out

3.3 V

SDRAM IO

Supply

SDRAM bidirectional data bit 8

SDR_D9

in/out

3.3 V

SDRAM IO

Supply

SDRAM bidirectional data bit 9

Table 2.

Pins description (continued)

Pin #

Ball #

Signal name

Type

Electrical

Supply

group

Description

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